US8242768B2 - System for testing power supply performance - Google Patents
System for testing power supply performance Download PDFInfo
- Publication number
- US8242768B2 US8242768B2 US12/558,599 US55859909A US8242768B2 US 8242768 B2 US8242768 B2 US 8242768B2 US 55859909 A US55859909 A US 55859909A US 8242768 B2 US8242768 B2 US 8242768B2
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- Prior art keywords
- voltage
- power supply
- voltage level
- signals
- terminal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Definitions
- the present disclosure relates to testing systems, and particularly to a system for testing power supply performance.
- FIG. 1 is a block diagram of a system for testing power supply performance, in accordance with an embodiment.
- FIG. 2 is a block diagram of a control circuit of FIG. 1 .
- FIG. 3 is circuit diagrams of an A/D conversion circuit, a voltage level conversion circuit, and a power circuit of FIG. 2 .
- FIG. 4 is a comparative graph showing signal waveforms obtained at output terminals of a power supply.
- FIG. 5 is a comparative graph showing signal waveforms obtained at output terminals of the power supply of FIG. 4 .
- a system for testing power supply performance includes a test apparatus 100 , an AC power supply 200 , a DC power supply 300 , and a control circuit 400 .
- the test apparatus 100 controls the AC power supply 200 to provide a 100V AC voltage to the DC power supply 300 .
- the AC power supply 200 outputs the 100V AC voltage to the control circuit 400 .
- the DC power supply 300 converts the 100V AC voltage to a 12V DC voltage and a SB (Standby) DC voltage, and outputs the converted DC voltages to the control circuit 400 .
- the control circuit 400 converts the AC voltage from the AC power supply 200 and the DC voltages from the DC power supply 300 to voltage level signals which can be identified by the test apparatus 100 .
- the test apparatus 100 receives the voltage level signals from the control circuit 400 , and generates signal waveforms of the DC voltages according to the received voltage level signals.
- the test apparatus 100 may be, for example, a personal computer, or other device capable of doing the functions of the test apparatus 100 .
- the AC power supply 200 is electrically coupled to a 220V AC voltage, and converts the 220V AC voltage to the 100V AC voltage.
- the DC power supply 300 is electrically coupled to a load (not shown), such as a personal computer.
- the control circuit 400 includes an A/D conversion circuit 410 , a voltage level conversion circuit 420 , and a power circuit 430 .
- the A/D conversion circuit 410 receives the AC voltage from the AC power supply 200 and the DC voltages from the DC power supply 300 .
- the voltage level conversion circuit 420 outputs voltage level signals which can be identified by the test apparatus 100 .
- the power circuit 430 provides working voltages to the A/D conversion circuit 410 and the voltage level conversion circuit 420 .
- the A/D conversion circuit 410 includes a microcontroller U 1 , a transformer T 1 , diodes D 1 ⁇ D 3 , capacitors C 1 ⁇ C 6 , and resistors R 1 ⁇ R 5 .
- the microcontroller U 1 includes I/O ports PA 0 ⁇ PA 3 , PC 7 , PD 0 , PD 1 , an analog signal reference port AREF, a ground port GND, an analog signal power port AVCC, and a power port VCC. Turns ratio at the transformer T 1 input terminal and output terminal may be, for example, 10:1.
- the diode D 1 is an LED and emits light to indicate when the test is complete.
- the resistors R 2 ⁇ R 5 are adjustable resistors.
- the transformer T 1 input terminal is electrically coupled to the AC power supply 200 output terminal for receiving the 100V AC voltage.
- the transformer T 1 output terminal is electrically coupled to the resistor R 2 first terminal via the diodes D 2 , D 3 and capacitor C 6 .
- the resistor R 2 second terminal is grounded.
- the resistor R 2 adjusting terminal is electrically coupled to the I/O port PA 0 .
- the resistors R 3 ⁇ R 5 first terminals are electrically coupled to receive the 12V DC voltage, SB DC voltage, and PG DC voltage from the DC power supply 300 respectively.
- the resistors R 3 ⁇ R 5 second terminals are grounded.
- the resistors R 3 ⁇ R 5 adjusting terminals are electrically coupled to the I/O ports PA 1 ⁇ PA 3 respectively.
- the resistors R 3 ⁇ R 5 adjusting terminals are electrically coupled to the capacitor C 5 first terminal and the microcontroller U 1 ground port GND via the capacitors C 1 ⁇ C 4 respectively.
- the capacitor C 5 second terminal is electrically coupled to the analog signal reference port AREF.
- the microcontroller U 1 analog signal power port AVCC and power port VCC receive a 5V DC voltage from the power circuit 430 respectively.
- the analog signal power port AVCC is electrically coupled to the I/O port PC 7 via the resistor R 1 and diode D 1 .
- the I/O ports PA 0 ⁇ PA 3 act as analog signals input terminals respectively.
- the I/O ports PD 0 , PD 1 act as digital signals receiving and transmitting terminals respectively.
- the voltage level conversion circuit 420 includes a voltage level conversion chip U 2 , and capacitors C 7 ⁇ C 11 .
- the voltage level conversion chip U 2 is a MAX232 type chip for RS-232 standard interface circuit of computer.
- the voltage level conversion chip U 2 includes charge ports C 1 +, C 1 ⁇ , V+, V ⁇ , C 2 +, C 2 ⁇ , data transforming ports T 1 IN, T 1 OUT, R 1 IN, R 1 OUT, a power port VCC, and a ground port GND.
- the charge ports C 1 +, C 2 + are electrically coupled to the charge ports C 1 ⁇ , C 2 via the capacitors C 7 , C 11 respectively.
- the charge ports V+, V ⁇ are electrically coupled to the 5V DC voltage and ground via the capacitors C 8 , C 10 respectively.
- the charge ports C 1 +, C 1 ⁇ , V+, V ⁇ , C 2 +, C 2 ⁇ and capacitors C 7 , C 8 , C 10 , C 11 forms a charge pump circuit for generating a +12V voltage and a ⁇ 12V voltage which are provided to the RS-232 standard interface circuit.
- the voltage level conversion chip U 2 power port VCC is electrically coupled to the 5V DC voltage, and is grounded via the capacitor C 9 .
- the data transforming port T 1 IN acts as a voltage level signal receiving terminal for receiving the digital signals from the I/O port PD 1 .
- the data transforming port T 1 OUT acts as a voltage level signal transmitting terminal for transmitting the converted voltage level signals to the test apparatus 100 .
- the data transforming port R 1 IN acts as a voltage level signal receiving terminal for receiving feedback signals from the test apparatus 100 .
- the voltage level conversion chip U 2 converts the feedback signals to digital signals which can be identified by the microcontroller U 1 .
- the data transforming port R 1 OUT acts as a voltage level signal transmitting terminal for transmitting the converted feedback signals to the I/O port PD 0 .
- the power circuit 430 includes a voltage regulator U 3 , a diode D 4 , and capacitors C 12 ⁇ C 15 .
- the voltage regulator U 3 includes an input terminal IN, a ground terminal GND, and an output terminal OUT.
- the voltage regulator U 3 input terminal IN is electrically coupled to the capacitor C 12 first terminal and the capacitor C 13 first terminal, and is electrically coupled to the cathode of the diode D 4 .
- the capacitor C 12 second terminal and the capacitor C 13 second terminal are electrically coupled to the voltage regulator U 3 ground terminal GND.
- the anode of the diode D 4 is electrically coupled to the voltage regulator U 3 ground terminal GND.
- the voltage regulator U 3 output terminal OUT is electrically coupled to the capacitor C 14 first terminal and the capacitor C 15 first terminal
- the capacitor C 14 second terminal and the capacitor C 15 second terminal are electrically coupled to the voltage regulator U 3 ground terminal GND.
- the voltage regulator U 3 input terminal IN acts as the power circuit 430 input terminal electrically coupled to a voltage adapter (not shown).
- the voltage regulator U 3 output terminal OUT acts as the power circuit 430 output terminal provides the 5V DC voltage to the microcontroller U 1 and voltage level conversion chip U 2 .
- the voltage adapter (not shown) converts the 220V AC voltage to a 9V DC voltage.
- the DC power supply 300 is electrically coupled to the test system as shown in FIG. 1 .
- the test apparatus 100 generates signal waveforms of the DC voltages according to the received voltage level signals as shown in FIGS. 4 and 5 , signal waveforms 11 , 22 , 33 are corresponding to the 12V DC voltage, the PG DC voltage, and the 100V DC voltage respectively.
- the 12V DC voltage when the 100V DC voltage of the AC power supply 200 gradually decreased to 80V, the 12V DC voltage also gradually decreased, and the DC power supply 300 does not output the PG DC voltage.
- the AC power supply 200 output decreased to 70V the DC power supply 300 does not output the 12V DC voltage, and then the AC power supply 200 output gradually decreased to 0V.
- the AC power supply 200 output jump from 0V to 100V, and then drop from 100V to 0V, the 12V DC voltage and PG DC voltage also jump and drop as the AC power supply 200 output changes.
- the AC power supply 200 output gradually increased from 0V.
- the AC power supply 200 output increased to 70V
- the 12V DC voltage gradually increased.
- the AC power supply 200 output increased to 80V
- the 12V DC voltage and the PG DC voltage all resumed.
- the 100V DC voltage of the AC power supply 200 gradually decreased to 80V, and then the AC power supply 200 output gradually increased from 80V to 100V.
- the 12V DC voltage normally output and the PG DC voltage only jump once when the AC power supply 200 output is 80V. It can be seen that when the AC power supply 200 output decreased or increased to corresponding threshold values, the 12V DC voltage and PG DC voltage drop or jump directly without delay. Therefore, Brownout/Recovery testing of the DC power supply 300 is normal.
Abstract
Description
Claims (5)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009103035054A CN101930060A (en) | 2009-06-22 | 2009-06-22 | Power supply test device |
CN200910303505 | 2009-06-22 | ||
CN200910303505.4 | 2009-06-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20100320998A1 US20100320998A1 (en) | 2010-12-23 |
US8242768B2 true US8242768B2 (en) | 2012-08-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/558,599 Expired - Fee Related US8242768B2 (en) | 2009-06-22 | 2009-09-14 | System for testing power supply performance |
Country Status (2)
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US (1) | US8242768B2 (en) |
CN (1) | CN101930060A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130200920A1 (en) * | 2012-02-07 | 2013-08-08 | Hon Hai Precision Industry Co., Ltd. | Power supply test system |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102608544A (en) * | 2011-01-19 | 2012-07-25 | 鸿富锦精密工业(深圳)有限公司 | Automatic measurement system and method |
CN102736037B (en) * | 2011-04-15 | 2015-11-25 | 台达电子工业股份有限公司 | power supply test control circuit, system and method |
CN104714120A (en) * | 2013-12-17 | 2015-06-17 | 国家电网公司 | Control guide detection circuit and device for charging pile |
CN108196098B (en) * | 2018-01-11 | 2021-09-24 | 上海展扬通信技术有限公司 | Test circuit and test power supply |
CN109600882A (en) * | 2018-12-28 | 2019-04-09 | 太仓思比科微电子技术有限公司 | A kind of chip testing light-source control system and control method |
CN117093437A (en) * | 2023-10-16 | 2023-11-21 | 成都电科星拓科技有限公司 | Method and device for testing chip bus input signal decision level tolerance |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1068748A (en) * | 1996-08-28 | 1998-03-10 | Ando Electric Co Ltd | Power abnormality detecting circuit for ic tester |
US5786774A (en) * | 1997-06-09 | 1998-07-28 | Sabol; Joseph M. | Alarm module |
US5994892A (en) * | 1996-07-31 | 1999-11-30 | Sacramento Municipal Utility District | Integrated circuit design automatic utility meter: apparatus & method |
US6198262B1 (en) * | 1998-11-20 | 2001-03-06 | Compaq Computer Corporation | Selective dual input low dropout linear regulator |
US6198302B1 (en) * | 1998-04-02 | 2001-03-06 | Lucent Technologies Inc. | System and method for testing power supplies |
US20010019669A1 (en) * | 2000-01-20 | 2001-09-06 | Yasunari Watanabe | Control method of AC voltage to be applied to electrifier |
US20020093470A1 (en) * | 2001-01-12 | 2002-07-18 | Upd Corporation | Apparatus and method for driving surface discharge plasma display panel |
US7659726B2 (en) * | 2006-08-30 | 2010-02-09 | Ricoh Company, Ltd. | Image forming apparatus with plural AC sources |
US20100156496A1 (en) * | 2008-12-24 | 2010-06-24 | Stmicroelectronics Pvt. Ltd. | High voltage switch with reduced voltage stress at output stage |
-
2009
- 2009-06-22 CN CN2009103035054A patent/CN101930060A/en active Pending
- 2009-09-14 US US12/558,599 patent/US8242768B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5994892A (en) * | 1996-07-31 | 1999-11-30 | Sacramento Municipal Utility District | Integrated circuit design automatic utility meter: apparatus & method |
JPH1068748A (en) * | 1996-08-28 | 1998-03-10 | Ando Electric Co Ltd | Power abnormality detecting circuit for ic tester |
US5786774A (en) * | 1997-06-09 | 1998-07-28 | Sabol; Joseph M. | Alarm module |
US6198302B1 (en) * | 1998-04-02 | 2001-03-06 | Lucent Technologies Inc. | System and method for testing power supplies |
US6198262B1 (en) * | 1998-11-20 | 2001-03-06 | Compaq Computer Corporation | Selective dual input low dropout linear regulator |
US20010019669A1 (en) * | 2000-01-20 | 2001-09-06 | Yasunari Watanabe | Control method of AC voltage to be applied to electrifier |
US20020093470A1 (en) * | 2001-01-12 | 2002-07-18 | Upd Corporation | Apparatus and method for driving surface discharge plasma display panel |
US7659726B2 (en) * | 2006-08-30 | 2010-02-09 | Ricoh Company, Ltd. | Image forming apparatus with plural AC sources |
US20100156496A1 (en) * | 2008-12-24 | 2010-06-24 | Stmicroelectronics Pvt. Ltd. | High voltage switch with reduced voltage stress at output stage |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130200920A1 (en) * | 2012-02-07 | 2013-08-08 | Hon Hai Precision Industry Co., Ltd. | Power supply test system |
Also Published As
Publication number | Publication date |
---|---|
US20100320998A1 (en) | 2010-12-23 |
CN101930060A (en) | 2010-12-29 |
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Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:XIE, LING-YU;REEL/FRAME:023223/0322 Effective date: 20090907 Owner name: HONG FU JIN PRECISION INDUSTRY (SHENZHEN) CO., LTD Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:XIE, LING-YU;REEL/FRAME:023223/0322 Effective date: 20090907 |
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